BuildCraft version: 7.99.21
Forge version: (Skyblock 2 1.5.0 Forge Version)
Link to crash report or log: N/A
Singleplayer or multiplayer: Multiplayer
Steps to reproduce: Log into Skyblock 2 server (version 1.5.0), click on link in the "Report BuildCraft bugs you find here"
Open the link in your web browser
Find the "414 Request-URI Too Large" from Github on nginx
Additional information:

Here is what the link looks like for me:
https://gist.github.com/AEnterprise/1c958c86cf9dd0325a035a671322d081

moved link to a gist to make the issue a bit shorter

seems like it's the adding of the modlist thing that is making it too long when there are too many mods?